Nut wrench



M. F. QUIGLEY.

NUT WRENCH.

APPLICATION FILED SEPT. 21', 1920.

1,403,059. Patented Jan.'10, 1922,

m v /Z avw wwboz Michael FQuzgley,

stars T FFHQLE.

' NUT WRENCH.

Specification of Letters Patent.

Patented Jan. 10, 1922.

Application filed September 21, 1920. "Serial No. 411,773.

T 0 all whom it may concern.

Be it known that I, BIIOHAEL F. QUIcL-nY, a citizen of the United States, and residing at Port Richmond, S. I.. in the county of Richmond and State of New York, have invented certain new and useful Improvements in Nut renches, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention. relates to what are known as nut wrenches and to devices of this class of the ordinary form or design, and the object thereof is to provide the jaws of a wrench of this class with hearing faces which will prevent the lateral movement or turning of the wrench on the nut in the operation of said wrench and also prevent the wrench from slipping outwardly ofi of the nut; and with this and other objects in view the in vention consists in a wrench of the class specified, constructed as hereinafter de scribed and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Fig. 1 is a side view of my improved wrench; N Fig. 2 a longitudinal section on the line 2-2 of Fig. 1; Fig. 3 a section on the line 3-3 of Fig. 2; Fig. 4 a section on the line 4- l of Fig. 3; Fig. 5 a view similar to Fig. 4.- but showing a modification and showing only one jaw of the wrench; and,

Fig. 6 a section on the line 6-6 of Fig. 5. In the drawing forming part of this specification I have shown at 7 a wrench of the class described, said wrench comprising a handle member 8 having a head 9 provided with main parallel jaw members 10, and these features of the invention are old and well known.

In the practice of my invention, as shown in Figs. 1 to 4: inclusive, the main jaw members 10 are provided in the faces thereof with longitudinal recesses 11 in which are set supplemental jaw members 12, which are secured in place by rivets 13 passed through said supplemental jaw members 12 and through the main jaw members 10, as clearly shown in Figs. 3 and 4.

The supplemental aw members 12 are composed of tool steel and the faces thereof are provided with a plurality of longitudinal grooves 14; which divide said faces into longitudinal teeth 15, and the faces of said supplemental jaw members are also provided adjacent to the ends thereof with transverse grooves 16 forming transverse teeth '17, the transverse teeth 17 being formed both by the longitudinal grooves and transverse grooves, the longitudinal grooves and transverse grooves are ll-shaped in cross section and the longitudinal teeth and the transverse teeth are also V-shaped, and this gives said longitudinal and transverse teeth sharp gripping edges or points.

It will be understood, of course, that the transverse grooves are not limited to two, as shown, but may be of any desired number as may also the longitudinal grooves and the longitudinal teeth, and it will also be under- 7 stood that the main jaws 10 of the wrench and the supplemental facing jaws 12 may be of any desired size.

In the operation of a wrench of this class, the longitudinal teeth in the bearing faces of the supplemental jaws prevent the wrench from slipping outwardly off of a nut, while the transverse teeth on the opposite end portions of the bearing faces of the supplemental aws prevent the wrench from turning on a nut in the operation thereof.

It is a well known fact that in the use of wrenches of this class, the rotation of the wrench on a nut, or the turning of a wrench on a nut frequently results in very serious injuries to the operator, as does also the slipping of the wrench outwardly off of a nut, and this is particularly true in ship construction, or in tightening the nuts on the rivets which hold the hull plates of the ship in position before the rivets are headed or riveted, but with my improvement these defects will be remedied and frequent and serious injuries to operators avoided.

In Figs. 5 and 6 I have shown a modification of the construction shown in Figs. 1 to 4 inclusive and, in this construction, the faces of the main jaws 10 are provided with longitudinal countersunk grooves 18, the walls of which are beveled inwardly and the supplemental jaw members 12 are similarly formed and are slipped longitudinally into the grooves 18, and are secured against longitudinal movement by beveled key-pins 19 which are driven into and through corresponding apertures formed in the abutting faces of the main jaw members 10 and supplemental jaw members 12.

With the construction herein shown and described, it will be seen that when the supplemental aw members or operating faces thereof, are worn so that they will not prevent the turning of the wrench on a nut, or the slipping of the wrench ofi a nut, the old supplemental jaw members may be detached and new supplemental jaw members secured in position, and in this way the life or use of the wrench may be continued indefinitely. It will be understood, of course, that the result of the use of a wrench made as shown in Figs. 5 and 6 will be the same as that of the construction shown in Figs. 1 to 4c inclusive, and it will also be understood that my invention is not limited to the exact details of construction herein shown and described, the main object of the invention being to provide the bearing faces of the jaws of a wrench of the class specified with means whereby the turning of a wrench on a nut in the operation of said wrench, or the slip= ping of the wrench off of said nut willbe avoided, and changes in and modifications of the construction herein described may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

It is a wellknown face that wrenches of the class herein described are usually cast or forged, or otherwise formed, with jaws of the same material andformed in the same way, but wrenches of this type, or made in this way, will not hold a nut securely and quickly becomes smooth or worn in use to such extent that in some uses of the wrench a successful operation thereof is impossible, but by providing the aws or the main jaws of a wrench 0f the class shown and described with supplemental jaw members, of steel or of metal treated so as to render it hard, or so that it will possess the quality of hard metal and providing the same with anti-slipping devices, the operation of the wrench is made much more effective and much safer and accidents, resulting from the use thereof are reduced to a minimum.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A nut wrench of the class and for the purpose specified, said wrench being provided with parallel jaws having parallel and hardened facings the entire surfaces of which are divided by parallel longitudinal grooves forming parallel longitudinal teeth, and the end portions of said facings and said longitudinal teeth being divided by transverse grooves to form transverse rows of teeth.

2. A nut wrench of the class and for the purpose specified, said wrench being provided with parallel jaws having supplemental jaw members having parallel faces composed of hard material and the entire surfaces of which are divided by longitudinal grooves forming longitudinal teeth, and the end portions of said surfaces and the longitudinal teeth being divided by transverse grooves forming transverse teeth.-

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnessesthis 20th day of Sept. 1920.

MICHAEL F. QUIGLEY.

Witnesses C. E. MULREANY, H. E. THOMPSON. 

